Aim and Methods: Guided self-determination (GSD) is an educational method developed to promote patient autonomy, participation, skills building and intrinsic motivation. In this evidence-based group-intervention the main objective is to implement and evaluate GSD through a randomised controlled trial. GSD methods will be performed seven times for the intervention group. The control group will receive traditional out-patient consultations - 'care as usual' Outcome measures will be performed at baseline, after 9 and 18 months. The project will focus on adults with type 1 diabetes (18-55 yrs) where an improvement will be highly cost-effective in preventing late complications and enhanced psychosocial health. GSD is presumably an intervention providing psychosocial support applicable in busy clinical practice.